An object at rest near the surface of a distant planet starts to fall freely. If the acceleration there is 4x that of the Earth, its speed two seconds later would be

c)as speed changes, wavelength and frequency change.

everything changes!

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table